EP2621028A1 - Gefäss und stopfen dafür - Google Patents

Gefäss und stopfen dafür Download PDF

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Publication number
EP2621028A1
EP2621028A1 EP11826468.8A EP11826468A EP2621028A1 EP 2621028 A1 EP2621028 A1 EP 2621028A1 EP 11826468 A EP11826468 A EP 11826468A EP 2621028 A1 EP2621028 A1 EP 2621028A1
Authority
EP
European Patent Office
Prior art keywords
receptacle
plug
unit
connection
power line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11826468.8A
Other languages
English (en)
French (fr)
Other versions
EP2621028A4 (de
Inventor
Keisuke Yoshikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP2621028A1 publication Critical patent/EP2621028A1/de
Publication of EP2621028A4 publication Critical patent/EP2621028A4/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/641—Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • the present invention relates to a DC (direct current) receptacle and a plug for DC wiring.
  • the current generated in the solar cells is DC.
  • the DC is converted into AC, using a converter, to be used at home or provided for sale.
  • electric appliances generally operate with DC using an AC-DC converter for converting AC into DC
  • the generated current is converted from DC to AC using a converter, and the AC is then converted into DC using the AC-DC converter.
  • almost about 20% of the originally generated power is not used but lost depending on the conversion efficiency.
  • DC power generated by a photovoltaic power generation facility is stored in a storage battery such as a lithium-ion battery, and current is supplied from the storage battery to a DC receptacle installed in a house or the like.
  • a DC connection device which is used by connecting a plug of a DC device, such as an illuminator or an electrical appliance that operates by receiving the supplied DC power, to the DC receptacle.
  • the plug may be disconnected from the receptacle even while current flows therethrough.
  • an arc may be generated between the connection terminals of the plug and the connection sockets of the receptacle, which is problematic.
  • DC has a constant value with no zero-cross point of current and voltage. Therefore, if an arc is generated, it is difficult for the arc to disappear, and the arc is very dangerous.
  • the present invention provides a receptacle and a plug for DC wiring, in which can have further improved safety by surely preventing the generation of an arc when the plug using DC is inserted into or removed from the receptacle.
  • a DC receptacle having, in a housing, a pair of connection sockets with which a pair of connection terminals of a plug used in a DC electrical equipment is adapted to be detachably electrically connected, the receptacle including: a circuit opening/closing unit configured to open or close a power line electrically connected to the connection sockets; and a connection verification unit configured to verify the connection of the plug to the receptacle, wherein the circuit opening/closing unit opens or closes the power line depending on the connection state between the plug and the receptacle detected by the connection verification unit.
  • the circuit opening/closing unit has a relay
  • the connection verification unit has a conductive contact adapted to be contacted with a conductive terminal of the plug
  • the relay is configured to turn on when the contact and the terminal are in a contact state and turn off when the contact and the terminal are in a non-contact state.
  • the DC receptacle further includes a current measurement unit for measuring a current value of current flowing through the power line; a locking mechanism unit for fixing the plug to the receptacle; and a control unit for controlling the operation of the circuit opening/closing unit depending on the connection state between the contact and the terminal and for controlling the locking mechanism unit so that the plug is not removed from the receptacle when the current value is measured by the current measurement unit.
  • a current measurement unit for measuring a current value of current flowing through the power line
  • a locking mechanism unit for fixing the plug to the receptacle
  • a control unit for controlling the operation of the circuit opening/closing unit depending on the connection state between the contact and the terminal and for controlling the locking mechanism unit so that the plug is not removed from the receptacle when the current value is measured by the current measurement unit.
  • connection verification unit is a movable piece which moves in a predetermined direction in response to the movement of a locking mechanism unit of the plug for fixing the plug to the receptacle, and wherein the circuit opening/closing unit is configured to close the power line by the movement of the movable piece to a predetermined position when the locking mechanism unit is in a lock state and open the power line by the return of the movable piece from the predetermined position when the locking mechanism unit is in a release state.
  • the circuit opening/closing unit is a breaker connected to the receptacle through a signal line and the power line and provided outside the receptacle
  • the connection verification unit transmits information on connection between the receptacle and the plug to the breaker through the signal line, and wherein the breaker opens or closes the power line based on the corresponding connection information.
  • the DC receptacle further includes a current measurement unit for measuring a current value of current flowing through the power line; a display unit for displaying a conducting state of the power line; and a control unit for controlling the display unit to display the conducting state when the current value is measured by the current measurement unit.
  • a current measurement unit for measuring a current value of current flowing through the power line
  • a display unit for displaying a conducting state of the power line
  • a control unit for controlling the display unit to display the conducting state when the current value is measured by the current measurement unit.
  • the DC receptacle further includes a display unit for displaying a conducting state of the power line, wherein the control unit controls the display unit to display the conducting state when the current value is measured by the current measurement unit.
  • the display unit is a light emitting diode or a liquid crystal display unit.
  • a plug which is adapted to be used corresponding to the DC receptacle.
  • the circuit opening/closing unit opens or closes the power line depending on a connection state between the plug and the receptacle, which is detected by the connection verification unit provided in the receptacle. For this reason, it is possible to further improve safety by surely preventing the generation of an arc when the plug using DC is inserted into or removed from the receptacle.
  • Fig. 5C is a perspective of the receptacle and the plug for DC wiring.
  • a receptacle 3 and a plug 2 for DC wiring in accordance with a first embodiment are shown in Fig. 1 .
  • the plug 2 includes a pair of connection terminals 21 used in electrical equipment which operates with DC, and is used for DC distribution.
  • the plug 2 further includes a terminal 22 for connection verification, which has conductivity of a metal member or the like and is used to verify the connection between the plug 2 and the receptacle 3.
  • the plug 2 is also used as a plug of an electric appliance such as an illuminator, PC or liquid crystal television, in which DC is used.
  • the receptacle 3 is installed indoors, for example, on a wall or a floor and allows the plug 2 to be removably inserted into the receptacle 3.
  • the receptacle 3 has, in a housing thereof, a pair of connection sockets 30 for DC feeding, and the connection terminals 21 of the plug 2 are electrically connected to the connection sockets 30.
  • the receptacle 3 is provided with a connection verification unit 31 for verifying the connection of the terminal 22 of the plug 2 to the receptacle 3 using two contacts A and B, a switch 33 connected in series to a power line 32, a coil 34a which allows the switch 33 to be in a closed state (ON) when current flows in the coil 34a and which allows the switch 33 to be in an open state (OFF) when no current flows in the coil 34a, and a relay power supply 34 for supplying power to the coil 34a.
  • the switch 33 and the coil 34a constitute a relay 45 serving as a circuit opening/closing unit.
  • the connection verification unit 31 has the two contacts A and B for contacting the terminal 22. If the terminal 22 of the plug 2 is inserted into the receptacle 3, current flows through an electric circuit including the connection verification 31, the relay power supply 34 and the coil 34a. While the plug 2 is not inserted into the receptacle 3, the switch 33 is in the open state (OFF). While the plug 2 is inserted into the receptacle 3, the switch 33 is in the closed state (ON) by means of electromagnetic operation of the coil 34a.
  • connection terminals 21 are connected to the connection sockets 30, and the terminal 22 of the plug 2 is then connected to the contacts A and B.
  • the power from the relay power supply 34 flows in the coil 34a, so that the switch 33 becomes in the closed state (ON) to start applying current to the plug 2.
  • the contact B of the connection verification unit 31 is separated from the terminal 22 and the switch 33 immediately becomes in the open state (OFF) before the connection terminals 21 are separated from the connection sockets 30, and then, the connection terminals 21 are separated from the connection sockets 30.
  • the verification of a connection state in the connection verification unit 31 is interlinked with the on/off operation of the switch 33.
  • the switch 33 is turned off simultaneously with the start of the removal of the plug 2 before the connection terminals 21 are separated from the connection sockets 30.
  • the receptacle 3 includes a measurement unit 35, a control unit 36 and a locking mechanism unit 37 as shown in Fig. 2 .
  • the measurement unit 35 includes an ammeter or the like, which is connected in series to the power line 32 and transmits a detected current value to the control unit 36.
  • the control unit 36 has a CPU and controls a switch of the relay 45 to be turned on when the connection between the plug 2 and the receptacle 3 is verified by the connection verification unit 31.
  • the control unit 36 operates the locking mechanism unit 37 to make the plug 2 not be removed from the receptacle 3 while the current value is detected by the measurement unit 35.
  • the locking mechanism unit 37 is connected to the control unit 36 and is automatically operated to fix or release the plug 2 based on a predetermined signal from the control unit 36.
  • the control unit 36 detects the connection between the plug 2 and the receptacle 3 through the contact between a contact C of the connection verification unit 31 and the terminal 22 of the plug 2, and turns on the switch of the relay 45 that is an opening/closing mechanism unit. Furthermore, if the current value is detected by the measurement unit 35, the control unit 36 operates and controls a removal prevention mechanism of the locking mechanism unit 37 to allow the plug 2 not to be removed from the receptacle 3.
  • the control unit 36 releases the locking mechanism unit 37 to allow the plug 2 to be removed.
  • the contact C of the connection verification unit 31 is separated from the terminal 22. Therefore, the control unit 36 detects the separation between the plug 2 and the receptacle 3 and turns off the switch of the relay 45.
  • the contact C of the connection verification unit 31 contacts the terminal 22 of the plug 2, and a current is then measured by the measurement unit 35. If the current is detected by the measurement unit 35, the control unit 36 operates the locking mechanism unit 37 to allow the plug 2 not to be removed from the receptacle 3. For this reason, it is possible to prevent the plug 2 from being unintentionally removed from the receptacle 3 while current flows through the plug 2, which prevents the generation of an arc and improve safety.
  • the operation of the second embodiment is similar to that of the first embodiment.
  • the terminal 22 of the plug 2 is preferably contacted with the contact C of the connection verification unit 31 after the connection terminals 21 are connected to the connection sockets 30.
  • the contact C of the connection verification unit 31 is preferably separated from the terminal 22 before the connection terminals 21 are separated from the connection sockets 30.
  • the receptacle 3 is connected to a remote control breaker 4 that is a breaker for wiring through the power line 32 and a signal line 5.
  • the connection verification unit 31 has a function of transmitting a bit signal or the like, which represents a connection state between the plug 2 and the receptacle 3, to the remote control breaker 4 through the signal line 5.
  • the connection verification unit 31 is a mechanical button and may verify the connection state between the plug 2 and the receptacle 3 based on the conducting state thereof.
  • connection verification unit 31 transmits the information on connection between the plug 2 and the receptacle 3 to the remote control breaker 4 through the signal line 5. Then, if the remote control breaker 4 receives the connection information indicating the connection between the plug 2 and the receptacle 3, the remote control breaker 4 turns on (in the closed state).
  • the connection verification unit 31 transmits the connection information corresponding to the disconnection between the plug 2 and the receptacle 3 to the remote control breaker 4, and the remote control breaker 4 receiving the corresponding information turns off (in the open state). That is, the remote control breaker 4 provided in the third embodiment serves as a circuit opening/closing unit.
  • the remote control breaker 4 is in the disconnection between the plug 2 and the receptacle 3 when the connection of the plug 2 to the receptacle 3 is not verified by the connection verification unit 31. For this reason, no voltage is generated between the connection sockets 30 of the receptacle 3 to improve safety, and it is possible to prevent the generation of an arc.
  • remote control breaker 4 that is a circuit opening/closing mechanism is provided outside the receptacle 3, and thus the configuration of the receptacle 3 can be simplified.
  • connection verification unit 31 is preferably configured to verify that the plug 2 is inserted into the receptacle 3 after the connection terminals 21 have been connected to the connection sockets 30. Then, the connection verification unit 31 transmits the connection information to the remote control breaker 4.
  • the connection verification unit 31 is preferably configured to verify that the plug 2 has been removed from the receptacle 3 before the connection terminals 21 are separated from the connection sockets 30. Then, the connection verification unit 31 transmits the connection information to the remote control breaker 4.
  • the plug 2 is provided with a locking mechanism unit 23 that is a removal prevention mechanism.
  • the receptacle 3 is provided with a movable piece 38 serving as a connection verification unit, and a pair of opening/closing members 39 for mechanically opening or closing the power line 32 in response to the movement of the movable piece 38 depending on the lock operation of the locking mechanism unit 23. That is, the opening/closing members 39 provided in the fourth embodiment serve as a circuit opening/closing unit.
  • the operation of the receptacle 3 and the plug 2 for DC wiring in accordance with the fourth embodiment will be described.
  • the movable piece 38 does not operate in the state before the plug 2 is inserted into the receptacle 3 as shown in Fig. 4A and in the state in which the plug 2 is just inserted into the receptacle 3 as shown in Fig. 4B .
  • contacts 39a of the pair of opening/closing members 39 are separated from each other, no current flows through the power line 32.
  • the locking mechanism unit 23 of the plug 2 performs locking operation as shown in Fig.
  • the locking mechanism unit 23 is released. That is, if the locking mechanism unit 23 is moved in the direction from the receptacle 3 to the plug 2 in the state in which the plug 2 is inserted in the receptacle 3, the movable piece 38 moves upward in Figs. 4A to 4C . Accordingly, the state in which the movable piece 38 pushes the one end portions of the opening/closing members 39 is released, and the contacts 39a of the opening/closing members 39 are separated from each other, so that no current flows through the power line 32.
  • the contacts 39a of the opening/closing members 39 are always in the contact state, in the lock state of the locking mechanism unit 23, in which the plug 2 cannot be freely removed from the receptacle 3. Furthermore, in the release state of the locking mechanism unit 23, the contacts 39a of the opening/closing members 39 are always in the separation state, in which the plug 2 can be freely removed from the receptacle 3. For this reason, it is possible to prevent the plug 2 from being unintentionally removed from the receptacle 3 in the conducting state and to prevent an arc from being generated even when the plug 2 is removed from the receptacle 3, thereby improving safety.
  • the receptacle 3 is provided with a measurement unit 35 for measuring a current value of current flowing therethrough, and a control unit 40 for displaying the conducting state of the receptacle 3 on an display unit 41 when the current value is detected from the measurement unit 35.
  • the plug 2 is provided with a measurement unit 24 for measuring a current value of current flowing therethrough, and a control unit 25 for displaying the conducting state of the plug 2 on a display unit 26 when the current value is detected from the measurement unit 22.
  • Fig. 5A the receptacle 3 is provided with a measurement unit 35 for measuring a current value of current flowing therethrough, and a control unit 40 for displaying the conducting state of the receptacle 3 on an display unit 41 when the current value is detected from the measurement unit 35.
  • the plug 2 is provided with a measurement unit 24 for measuring a current value of current flowing therethrough, and a control unit 25 for displaying the conducting state of the plug 2 on a display unit 26 when the current value is detected from the measurement unit 22.
  • the display unit 26 or 41 may be, for example, a light emitting diode (LED) or a liquid crystal display unit.
  • the LED may emits red light in the conducting state and emits green light or turns off the light in the non-conducting state.
  • the liquid crystal display unit may display a current value.
  • control unit 40 or 25 and the display unit 41 or 26 may be provided in either one of the receptacle 3 or the plug 2.
  • the conducting state may be displayed on at least one of the display unit 26 of the plug 2 and the display unit 41 of the receptacle 3. This makes users pay attention not to remove the plug 2 in the conducting state, thereby improving safety.
  • the fifth embodiment may be used in combination with the first to fourth embodiments. Furthermore, in a case where the embodiment shown in Fig. 5A is combined with the second embodiment, the function of the control unit 40 shown in Fig. 5A may be added to the control unit 36 provided in the second embodiment.
EP11826468.8A 2010-09-22 2011-09-20 Gefäss und stopfen dafür Withdrawn EP2621028A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010212740 2010-09-22
PCT/IB2011/002168 WO2012038797A1 (ja) 2010-09-22 2011-09-20 直流コンセン卜及びプラグ

Publications (2)

Publication Number Publication Date
EP2621028A1 true EP2621028A1 (de) 2013-07-31
EP2621028A4 EP2621028A4 (de) 2014-05-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11826468.8A Withdrawn EP2621028A4 (de) 2010-09-22 2011-09-20 Gefäss und stopfen dafür

Country Status (5)

Country Link
US (1) US20130194734A1 (de)
EP (1) EP2621028A4 (de)
JP (1) JP5988190B2 (de)
TW (1) TW201225434A (de)
WO (1) WO2012038797A1 (de)

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Also Published As

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US20130194734A1 (en) 2013-08-01
EP2621028A4 (de) 2014-05-21
JP5988190B2 (ja) 2016-09-07
JP2012089477A (ja) 2012-05-10
TW201225434A (en) 2012-06-16
WO2012038797A1 (ja) 2012-03-29

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